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#1
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OK, now I have an updated X128, I want to be sure that the TRIM command is being passed. fsutil shows disabledeletenotify to be 0, so that is good. But other threads make it clear that I need to be using the MSAHCI driver. How do I establish that? I've looked at the Corsair in Device Manager and this is what I get:
![]() None of those look like msahci.sys - or should I be looking somewhere else? |
#2
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There is a FAQ about that on Microsoft's site search for how to Check enable TRIM support in Windows 7 at www.microsoft.com/technet
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Support accounts and tickets can be created at https://support.corsair.com. |
#3
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Thanks RG. If you mean
http://blogs.msdn.com/e7/archive/200...rives-and.aspx I have read it and I cannot see how to tell whether I am actually using the MSAHCI Driver. edit: doubtless because Microsoft assumes that anyone reading that is going to be some sort of ubergeek, for whom such knowledge is a given. Alas not so in my case Last edited by Stewart1; 04-09-2010 at 05:39 PM. |
#4
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i was wondering the same thing and by using google and "common sence" i am quite confident that i have nailed down how to confirm the MSAHCI driver is active.
By looking at what to do if you are in IDE and want to go AHCI without re-installing you need to go to go into your registry and look-up: HKey_local_machine/system/currentcontrolset/services/msahci and set the "start" value to "0" to have it start at the next re-boot. From this i take it that the value (0) indicates that the MSAHCI driver starts and is "active". Would be great if someone could confirm that this is the correct way to confirm this. I have a value of (0) but suspect Trim is not "active" even though i was able to update the FW on my X128 so i would be very interested to know. Cheers, |
#5
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@PrObE
This is what my registry settings look like: ![]() There is something called "start" which has a value of 3. What does that imply? Should I change it? |
#6
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There is an awesome Blog about SSD's in general on MSDN that is good reading to help understand the basics.
Quote:
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Support accounts and tickets can be created at https://support.corsair.com. |
#7
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OK, thanks, and please bear with me here, because I am still a bit confused.
I am happy with being in IDE mode. But the implication o THIS, from the TRIM FAQ on this forum: Quote:
Thanks for your patience. |
#8
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You can check if TRIM is active with the steps I just posted. They (Microsoft) suggest AHCI mode as would I but It is solely up to the driver to pass the command no matter if its IDE or AHCI Mode, assuming of course that TRIM enabled Firmware is installed and you are using Windows 7 on a supported controller.
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Support accounts and tickets can be created at https://support.corsair.com. |
#9
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I think you are saying that I have to edit the registry to start the MSAHCI driver, even if all I want it to do is pass the TRIM command to the drive in IDE mode.
So that is what I will try. edit: OK, I've done it. msahci.sys still does not appear as a driver when I inspect the drive using Device Manager, but perhaps that's looking at something else. If I understand everything correctly, having checked disabledeletenotify=0 and msahci start=0, there is nothing else I can do, other than wait and observe the performance of the drive. Last edited by Stewart1; 04-09-2010 at 07:34 PM. |
#10
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![]() Quote:
So before you make that change you should make sure that you have that option in the BIOS and that you have the latest driver that support AHCI Mode. Then you can go through the steps to enable it if you choose to. Quote:
![]() You should be set and AHCI is a mode not a Hard ware driver so you will not see a driver listed in device manager other than the Microsoft MSAHCI.SYS which loads as a service or driver as Windows boots.
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Support accounts and tickets can be created at https://support.corsair.com. Last edited by RAM GUY; 04-09-2010 at 07:49 PM. |
#11
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I appreciate your patience Ram Guy.
So if you want to use TRIM in IDE mode, ALL YOU NEED TO DO is check that disabledeletenotify=0, is that right? Despite this: Quote:
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#12
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Look in the device manager under"IDE ATA/ATAPI controllers"
If you have the MSAHCI installed then there will be a entry "Standard AHCI 1.0 Serial Controller" |
#13
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But as I have said, I was not seeking to turn on AHCI, and have not changed the mode from IDE in the BIOS. All I want is to ensure that the TRIM commands are being passed to the SSD. |
#14
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Update: I give up. Have gone into BIOS and enabled AHCI. "Standard AHCI 1.0 Serial Controller" now appears in Device Manager.
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